Brother HL-4200CN Service Manual page 237

Cyan Toner Empty FIP
Step
Initial setting
Check the following for evidence of fault.
1 Low toner sensor replacing condition
Toner cartridge replacing condition
Toner motor replacing condition
Checking toner cartridge
2 Check if an error occurs though the toner
cartridge was replaced with a new one.
Checking drive PWBA HBN DRV for
signal
3
Is P/J51-34<=>P/J51-33 less than
+0.2VDC?
Checking harness ASSY TNR4 for
4 continuity
Is J443<=>J51 continuous normally?
Checking low toner sensor
Check if an error occurs though the low
5
toner sensor was replaced with a new
one.
Checking harness ASSY DRV2-2 for
continuity
6
Is J12-21<=>J42-10 continuous normally?
Checking toner motor
Does toner motor function normally?
7 Using toner motor, check by digital output
test.
In the test, close the interlock SW.
Checking PWBA HBN DRV for signal
8
Is P/J51-19<=>P/J60-2 +24VDC?
Checking harness ASSY TNR4 for
9 continuity
Is J513<=>J51 continuous normally?
Checking toner motor
10 Check if an error occurs though the toner
motor was replaced with a new one.
Checking harness ASSY DRV1 for
continuity
Check the following for continuity.
11 J11-33<=>J41-8
J11-34<=>J41-7
J11-35<=>J41-6
J11-36<=>J41-5
Check
V-31
Remedy
Yes
Replace the parts
Go to step [2]
concerned
Go to step [3]
Go to step [4]
Go to step [6]
Replace
Go to step [5] harness ASSY
TNR4
Go to step [6]
With tool
Replace
Go to step [7]
harness ASSY
Without tool
DRV2-2
Go to step [8]
Check the toner
stirring auger or Go to step [8]
gear for damage
Replace PWBA
Go to step [9]
HBN DRV
Replace
Go to step [10] harness ASSY
TNR4
Go to step [11]
Replace PWBA
Replace
HBN DRV, and if
harness ASSY
still faulty, replace
DRV1
MCU HL-4200
No
End of work
End of work
End of work